hardihood vs boldness

hardihood and boldness both are nouns.

Word	Noun	Adjective	Verb	Adverb
hardihood	Yes	No	No	No
boldness	Yes	No	No	No

As nouns, hardihood and boldness are synonyms defined as:

hardihood and boldness: the trait of being willing to undertake things that involve risk or danger

Other synonyms of hardihood include daring, hardiness.

hardihood (noun)	boldness (noun)
the trait of being willing to undertake things that involve risk or danger	the trait of being willing to undertake things that involve risk or danger
	the quality of standing out strongly and distinctly
	impudent aggressiveness